How Greentol works
Greentol Cough Syrup
- Contains ingredients such as dextromethorphan (a cough suppressant) and guaifenesin (an expectorant).
- Dextromethorphan acts on the cough center in the brain to reduce the urge to cough.
- Guaifenesin thins and loosens mucus in the airways, making it easier to cough out phlegm and clear congestion.


